Horn



' 1931- E. c. HORTON ET AL 1,334,619

HORN

Filed March 18, 1931 I as I6 KKK Efiuin (3.1151101; Hnvy Husker @QMQW M' (WWW:

I Patented Dec. 1.1931

UNITED STATES.

PATENT OFFIGE SIGNORB '1'0 TBICO PRODUGIS CORPORATION, OF BUFFALO, NEW YORK HORN Application a March 18, 1931. Serial 110. 523,621.

This invention relates to a fluid pressure rated horn for giving a warning note or signal, the horn being especially adapted and designed for use on vehlcles such as automobiles and boats.

no menting the sound waves Theinvention comprehendsa device having a sound box with a fluid pressure actuated sound generating valve and an elon gated trumpet passage for directing and augroduced in the sound box. The'valve, whic is caused to oscillate toward and away from a valve seat by a difi'erencein fluid pressure exerted against its 0 posits faces, is supported by resilient mem rs arranged in a novel manner, rendering'the device susceptible of economical manufacture and of read adjustment to secure the desired sound e ect, The resilient members which support the oscillator or valve are disposed co axially of its axis of oscillation, thereby permitting of comparatively free angular movement of the valve relative to the axis of oscillation to allow it to seat properly.

These and other objects and advantages will become apparent from the following description of a typical embodiment of the invention, reference being made to the accompanying drawings, wherein:

.Fig. 1 is aside elevational view of the completed device. I

' Fig. 2 is an enlarged central longitudinal sectional view, showmg the inner end of the trumpet, the sound box, and the elements contained in the latter.

-Fig. 3is a transverse sectional view, taken approximately upon line .3-3\ of Fig. 2.1

Fig. 4 is a perspective view of the sound box rear casing section.

Fig. 5 is a disassembled view of'the sound generatin valve and the supporting means therefor, t e resilient members being omitted.

As shown in Figs. land 2, the device com! prises an elongated tapered trumpet with a bell shaped forward end 11. The inner end 12 ofthe trumpet may be of heaviermetal and screw threaded for attachment to the forward casing section 13 of the sound box, a fluted locking nut 14 being provided to lock the parts 12 and 13. The rear interior of the .relative proportion.

casing section 13 is screw threaded to receive the rear casing section 15, shown in Fig. 4,

which comprises a forward threaded plug portion 15 andja shank having a non-circular .end 16; A set screw 17 may be threaded into engine or other source of fluid under pres-- sure less than thatmaintain'ing in the pas- O. HORTON, OF HAMBURG, AND-HENRY HUI-BER, OF BUFFALO, NEW YORK, AS

sage of'trumpet 10,.in the device illustrated.

The casing defines another chamber 22, which in this embodiment is within the confines of the trumpet member, and which communicates with the trumpet passage through a re-' duced neck 23, A sound creating valve or oscillator 24 is disposed within the chamber 19 and is adapted tp seat against the surface- 25 to close communication-between chamber 19 and. chamber 22. The oscillator may mounted upon a shank 26, being retalned thereon by a heavy nut 27 which may also function to increasethe inertia of the valve assembly and reduce its rate of oscillation.

The valve assembly is suspended by a pair of springs 28 and 29, the latter extendmiinto a well 31 in the rear casing section and eing attached to the shank, 26 and a headed pin 32 which extends into the well. Spring 28 may be attached to the shank26 and anchored to a pin 33 extending through the trum et member, the pin being retained against 'splacement by the locking nut 14. Both springs may e placed under the desired tension by turning the casing section 15 outwardly. 'Ithas been 'found to be preferable to form the-spring 28 relatively long and the spring 29 relatively stifi, although the s rings may be made of the same or any other esired In operation the greater fluid pressure 8' maintaming'in the chamber on the'forward reciproc'ated to produce sound pulsations side of the valve 24 will cause the valve to open, relieving the tension on the spring e and increasing that of the spring 28.

, thus effected will set the air within the sound box into sound eflectin oscillation, the sound waves being amplifie and directed b the trumpet assage. The rate of the oscil ation.

of the va 've and the pitch of the sound signal produced thereby will be dependent upon the wei ht or inertia ofthe valve which may be varled by substituting nuts of difierent size for that indicated at 27, or the rate may be changed by varying the tension of the SPIlllgS by rotating the rear casin section.

When the springs are 0 approximately the relative siz'es illustrated, it will ,be noted that the heavier spring 29 isunder maximum tension when the'valve is closed, the tension decreasing as the valve opens. The lighter, longer. sprin 28 is under minimum tenslon when the va ve is seated and under greater tension when the valve is unseated. By rea- .ment.

It will be understood that the specific de-' son of the unequal sizes of they springs, the initial tension, or tension holdingthe valve to its seat and resisting initial opening move- *ment, can be very readily regulated, since substantially all of the longitudinal movement of the adjustable member will be taken up by the lighter and longer spring. Upon openmg movement there will be less tendency for s rings,- havingbthis relationshi to permit the valve ass'em and longer spring will be placed under increased tension. v

By reason of the coincidence of the spring axes and'the axis of valve reciprocation, the need for a valve guideway is eliminated, and the valve is given relatively great freedom of motion, being permitted to move slightly to one side of its normal axis of movement or to move angularly inorder to assume a pro er seat. The construction is sim lo and utilizes relatively few parts, of which are adapted to ready manufacture, assembly and adjustvice described is merely illustrative of the principles of the invention and that these ,principles may be embodied in'devices having other structural relationships. i

What is claimed is:

1. A fluid pressure operated horn com-prising-a chamber havingan inlet port and an outlet port, a reciprocatory member normally seating to/close one port and adapted to be 1y to sag since t e lighter when a fluid stream is caused to move throu h the chamber from one to the-other of sald I ports, and 'a pair of spring members disposed substantially longitudinally of the. path re-' ciprocation of said member" for supporting it, said springs being disposed on opposite sides ofthe member. I

2; A fluid pressure operated horn comprising a chamber having an inlet'port and an means for adjusting the tension of said spring H members. 3. A fluid pressure operated horn comprisingv a chamber having an inlet and an'outlet port, a reciprocatory member adapted to close one port and adapted to be reciprocatedto.

produce sound pulsations whena fluid stream 4 1s caused to move through the'chamber -from one to the other of said ports, a coiled tension spring joined to each of opposite sides of said member and disposed substantially along the line of reciprocation of the member, and meansfor varying the tension of said springs, whereby the member may be normally supported by close one port.

4. A horn comprising a casing having a chamber and a sound outlet port from said chamber, a sound producing member for closing said port and adapted for vibratory" movements to produce sound pulsations, a

pair of spring members disposed substantially in the line of vibratory movement of said sound producing member and joined to op site sides of said sound producing member for normally retaining it in a. redetermined relationship tosaid casing, an means for effecting vibratory movements of the sound producing member.

the springs in seated position to 5. A horncomprising va casinghaving a chamber anda sound outlet passage'in communication withrthe chamber, a pair of coil i springs under tension disposed end'on end in said'chamber and port and substantially perpendicular to a seat formed in the casing at the juncture of the sound outlet passage and the chamber, and a vibratory member normally disposed against said seat and joining said springs, one of said springs urging said member toward the seat and the other urging it away from the seat, the latter spring being stifl'er than the other spring.

6. A hor'n' comprising a casingv having a chamber and a port extending from said chamber, a sound, producing member for closing said port and adapted for vibratory movements to produce sound pulsations, a

pair of coiled springs disposed substantially no in the line of vibratory movement of said member and joined to opposite sides of said member for normally retaining'it in closing position, the spring on thechamber side of the memberbeing shorter and heavier than the other spring, and means for moving the heavier spring relative to the casing to vary the tension of the springs.

7. A horn comprising a pair of easing sections screw threaded. together and together defining a chamber, a port in one section opening into said chamber, valve means in said chamber adapted to seat over said opening and to oscillate away from and toward the opening to produce sound pulsations, spring means for supporting said valve means, said spring means comprising a pair of coiled tension springs disposed one on each side of a the valve means and substantially in the line of its oscillatory movement, and one of said springs being joined to each of the casing sections, whereby upon relative screw movement or" the sections the tension of said springs may be varied.

8. A horn comprising a pair of easing sections screw threaded together and together defining a chamber, a port in one section opening into said chamber, a pair of tension springs in end to end relation and extending substantially axially of said port and across said chamber, a support extending across the port of one casing section for supporting one end of one spring and means for joining the other spring to the other casing section, and sound producing means between and joining said springs, whereby upon relative screw movement of the sections the springs may be tensioned to normally support the valve means in a position closing the port from the chamber.

9. A horn comprising a casing having a chamber and I a trumpet passage defimng member screw threaded, into the casing, sound producing means disposed in said chamber and adapted to seat against the inner end of the member, a pin extending through the member beyond the confines of the casing, a tension spring joined to the means and the pm for urging the means against the member, and a locking element screw threaded to said member for retaining said pin and for locking the member and easing together. v

10. A horn comprising a pair of easing sections having a screw threaded connection and together defining a chamber, a" sound producing member disposed in said chamber, a spring secured to each of said sections, vand to said sound producing member, whereby upon relative screw movement of the sections the springs may be adjusted to a desired degree of resiliency, and a cap fitted to one of said sections for enclosing the other of said sections to protectthe screw threaded connection.

j 11. A horn comprising a casing having a chamber and a trumpet passage opening into the chamber through an annular-seat, a valve coacting with the seat to interrupt fluid movement through the seat, and a resilient support for the valve for urging the latter to its seat, said resilient support arranged substantially coaxial of the annular seat and constituting the sole means of support for the valve, said valve being unguided in its movement to and from the seat by the casing.

-' ERWIN C. HORTON HENRY HUEBER. 

